Spring construction.



J. H. STONE.

SPRING CONSTRUCTION.

APPLICATION FILED 050.5. 1916.

Patented Sept. 3,1918;

2 SHEETSSHEEI WITNESSES V v I mmvron {JOSEPH H.5TONE,

A TTORNEYS J. H. STONE. S'PRING cowsmucnow.

APPLICATION P11100503. 1916.

2 S'HAEETS-SHEEI 2.

"'mllllm WITNESSES QM doszrn H.5TONE BY I A TTORNEYS INVENTUR Patented Sept. 3, 1918.

vehicles of various kinds D STATES PATENT orricn.

JOSEPH H. STONE, OF ESCOlNDIDO, CALIFORNIA.

SPRING CONSTRUCTION.

Specification of Letters Patent.

Application filed December 5, 1916. Serial No. 135,282.

To all whom it may comer n:

Be it known that I, J osnrn H. STONE, a

. citizen of the United States, and a resident of Escondido, in the county of San Diego and State of California, have invented a binations, constructions, and arrangements Q inthe following specification,

- rovide a construction, m

is nutlally loads, and

, plication,

play under a light herein described and claimed I An object of my invention is to 'PI'OVldG a device which is so constructed as to be equall elastic under light or heavy loading. A further object of my invention is to provide a spring having elastic qualities against end shocksp A further. object of my invention isto which onespring brou'ht into play with light oth springs are brought into play under heavy loads. 7 Other objects and advantages will appear and thenovel features of the invention will be particularly pointed out in the appended clalms.

My invention is illustrated .in the accoinpanying drawings forming part of this -ap-,

in which:' Figure'l is a side view of a spring constructed according to my invention;

Fig. 2 is a detail view of a portion of the spring shown in Fig. 1, certain parts belng shown in section; 3

Fig. 3 is an enlarged section on the line Fig. 4 is an enlarged section on the line 44 of Fig. 2, and

Figs. 5, 6, and 7 are modified forms of the spring.

The main feature of my improved sprlng is in providing a spring c0nstruction '1n which an'mr per spring is first brought into load, while a lower spring is bronghtinto play when the upper spring has been moved to a given POSltlOIl, depending upon the-size of the spring and 1ts particular relation with respect to the lower ring.

Fig. 1 I have shown upper springs. 1'

which are secured at 2 to the body portioir of the vehicle in any suitable manner, Theends of-these springs 1 are made elastic and bent downwardly as shown at 3. v The spring is bent inwardly as shown at 4 and then upwardly, forming a loop. In the present instance, z'. e., in that form shown in Figs. 1 and 2, the end of the spring is passed around a pin 6 carried by a hanger 7. Y

Each of the springs 1 is bent at its ends and is secured in the manner described. In fact, the springs 1 in Fig. 1 might be asingle spring, for ihstance as shown in Figs. 5 and A Patented S ept. 3,1918.

6, without departing from the spirit of the invention.

, A-lower heavy spring 8 is secured to the axle 9 in any suitable manner. It will be observed that the ends of this spring 8 are bent upwardly, as shown at 8", and are made llghter' and more elastic. These ends are brought around downwardlyand inwardly substantially concentric with the loops of the upper spring. The end of the lower is provided with a roller-10 and isloosely disposed between the hooked portion of the upper spring, sons to slide therebetween. At -11 I have shown'a series of antifriction rollers carried bythe lower spring,

and which are arranged to beengaged by the upper spring, as willzbe} explained later.

From the foregoing description of the vavious parts of the device, the operation thereof may be readily understood.

When initial pressure comes on the upper spring it will move from the fu1l'line posi-' t on shown in Fig. 2 to the dottedline position, in which the upper spring will tend to leavethe lower spring. If the weight is relatively l ght the upper spring alone will be. brought into play, but if the weight is greater, then, on further pressure of the upper spring, it will come into contact with the upwardly turned -end. of the lower p roller bearlngs spring is now end will move with respectto the end of the up r s ring.

- 11 or or to prevent noise Imay insert an elastic cushion 12 between the curved portions of the upper and -'lower springs, as shown in Fig. 2. This may made of any suitable material, suichas rubber, leather, etc.

The ends of the lower spring beingfitted tothe ends of the upper. spring, brace the upper spring against endwise'motion of the vehicle. The extension of the upper spring ends aroundabove the bottom the inner spring, prevents exceslve are situated. The lower brought into play, and the portions of substantially at the place where the In Figs. 5, 6 and 7 I have shown modified forms of the device which, however, depend upon the same principle, z. e.', that of an upper sprin which acts with light loads and which su sequently brings into action a lower spring with heavier loads. In Fig. 5 the upper spring 13 is looped around the end 14* of a lower sprin 14. The two ends ing to force the upwardly bent ends downwardly.

In Fig. 6 the spring 15 is looped around and has its end 15 secured to a bracket 17. The end 16 of the lower spring is also secured to this bracket. It will be seen that the relations of the ends of the up er and lower springs are, however, substantially the same, so that the upper spring will take the initial load and subsequently bring into play the lower s ring.

In Fig. g the upper spring 18 and the lower spring 19 have the same relation as the springs 15 and 16 in Fig. 6.

I am aware that other forms of springs might be made which are based on the same general. principle without departlng in the least from the spirit and scope of the invention.

amass I claim: A

1. In a. spring construction for vehicles,

the combination with an upper spring mem-' ber adapted to be secured to the body of the within thecurved portion of the first spring member, and having its weight receiving portion normally spaced from the first spring member, and said second spring member being movable independently of the first spring member.

2.11 a sprlng construction, the combination with an upper spring member, adapted to be secured to the body of the vehicle, and

provided with downwardly extending inwardly curved portions, of a second spring member adapted to be secured to the axle,

and having similarly curved portions fitting within the curved portions of the. first spring member, and connections between said curved portions for permitting independent movement of said curved portions relative to each other, and said second spring member having its weight receiving portion normally spaced from the weight receiving portion of the first spring member, whereby the first spring member is brought into play under light loads, and

both springs brought into play under heavyloads.

JOSEPH H. STONE. 

